22778468 has 12 divisors (see below), whose sum is σ = 39979632. Its totient is φ = 11355720.

The previous prime is 22778449. The next prime is 22778477. The reversal of 22778468 is 86487722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6818 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (3331636).

Almost surely, 2^22778468 is an apocalyptic number.

It is an amenable number.

22778468 is a deficient number, since it is larger than the sum of its proper divisors (17201164).

22778468 is a wasteful number, since it uses less digits than its factorization.

22778468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16762 (or 16760 counting only the distinct ones).

The product of its digits is 301056, while the sum is 44.

The square root of 22778468 is about 4772.6793313609. The cubic root of 22778468 is about 283.4706963315.

The spelling of 22778468 in words is "twenty-two million, seven hundred seventy-eight thousand, four hundred sixty-eight".